San Francisco 49ers quarterback Colin Kaepernick answers questions at a news conference after an NFL preseason football game against the Green Bay Packers Friday, Aug. 26, 2016, in Santa Clara, Calif. Green Bay won the game 21-10. (AP Photo/Ben Margot) less

San Francisco 49ers quarterback Colin Kaepernick answers questions at a news conference after an NFL preseason football game against the Green Bay Packers Friday, Aug. 26, 2016, in Santa Clara, Calif. Green Bay ... more

San Francisco 49ers quarterback Colin Kaepernick holds the football during warmups before a preseason NFL football game against the Denver Broncos, Saturday, Aug. 20, 2016, in Denver. (AP Photo/Jack Dempsey)

San Francisco 49ers quarterback Colin Kaepernick holds the football during warmups before a preseason NFL football game against the Denver Broncos, Saturday, Aug. 20, 2016, in Denver. (AP Photo/Jack Dempsey)

San Francisco 49ers quarterbacks Colin Kaepernick, left, and Blaine Gabbert stand on the sideline during the second half of an NFL preseason football game against the Green Bay Packers on Friday, Aug. 26, 2016, in Santa Clara, Calif. Green Bay won 21-10. (AP Photo/Tony Avelar) less

San Francisco 49ers quarterbacks Colin Kaepernick, left, and Blaine Gabbert stand on the sideline during the second half of an NFL preseason football game against the Green Bay Packers on Friday, Aug. 26, 2016, ... more

Quarterbacks Colin Kaepernick (7) and Christian Ponder (5) of the San Francisco 49ers are seen on the sideline during the second quarter of his NFL preseason game against the Green Bay Packers at Levi's Stadium in Santa Clara, Calif. on Friday, Aug. 26, 2016. less

Quarterbacks Colin Kaepernick (7) and Christian Ponder (5) of the San Francisco 49ers are seen on the sideline during the second quarter of his NFL preseason game against the Green Bay Packers at Levi's Stadium ... more

Colin Kaepernick (7) smiled as the last seconds ticked off for a 49er victory Sunday January 12, 2014. The San Francisco 49ers beat the Carolina Panthers 23-10 in Charlotte, North Carolina to advance to the NFC title game against Seattle. less

Colin Kaepernick (7) smiled as the last seconds ticked off for a 49er victory Sunday January 12, 2014. The San Francisco 49ers beat the Carolina Panthers 23-10 in Charlotte, North Carolina to advance to the NFC ... more

Photo: Brant Ward, The Chronicle

Colin Kaepernick (7) smiled as the last seconds ticked off for a... Photo-5798670.78776 - StamfordAdvocate

Image 7 of 60

San Francisco 49ers quarterback Colin Kaepernick (7) tries to get away from Atlanta Falcons outside linebacker Stephen Nicholas (54) and defensive tackle Peria Jerry (94) during the first quarter at Candlestick Park on Monday, Dec. 23, 2013 in San Francisco, Calif. less

San Francisco 49ers quarterback Colin Kaepernick (7) tries to get away from Atlanta Falcons outside linebacker Stephen Nicholas (54) and defensive tackle Peria Jerry (94) during the first quarter at Candlestick ... more

49er quarterback Colin Kaepernick, (7) warming up before the start of the game as the San Francisco 49ers prepare to take on the St. Louis Rams at Candlestick Park in San Francisco, Ca., on Sunday Dec. 1, 2013.

49er quarterback Colin Kaepernick, (7) warming up before the start of the game as the San Francisco 49ers prepare to take on the St. Louis Rams at Candlestick Park in San Francisco, Ca., on Sunday Dec. 1, 2013.

Seattle's Ricardo Lockette, (left) and 49ers' quarterback Colin Kaepernick, exchange uniforns at the end of the game, as the San Francisco 49ers beat the Seattle Seahawks 19-17, at Candlestick Park on Sunday Dec. 8, 2013, in San Francisco, Ca. less

Seattle's Ricardo Lockette, (left) and 49ers' quarterback Colin Kaepernick, exchange uniforns at the end of the game, as the San Francisco 49ers beat the Seattle Seahawks 19-17, at Candlestick Park on Sunday ... more

San Francisco's Colin Kaepernick, (7) reacts after further review of a catch by the 49ers Vernon Davis, was ruled a touchdown, during the second quarter as the San Francisco 49ers take on the Carolina Panthers in the NFC divisional playoffs in Charlotte, North Carolina on Sunday Jan. 12, 2014, at Bank of America stadium. less

San Francisco's Colin Kaepernick, (7) reacts after further review of a catch by the 49ers Vernon Davis, was ruled a touchdown, during the second quarter as the San Francisco 49ers take on the Carolina Panthers ... more

Colin Kaepernick (7) ran over the goal line for a touchdown early in the third quarter Sunday January 12, 2014. Luke Kuechly (59) tried to defend. The San Francisco 49ers beat the Carolina Panthers 23-10 in Charlotte, North Carolina to advance to the NFC title game against Seattle. less

Colin Kaepernick (7) ran over the goal line for a touchdown early in the third quarter Sunday January 12, 2014. Luke Kuechly (59) tried to defend. The San Francisco 49ers beat the Carolina Panthers 23-10 in ... more

Photo: Brant Ward, The Chronicle

Colin Kaepernick (7) ran over the goal line for a touchdown early... Photo-5798679.78776 - StamfordAdvocate

Image 18 of 60

Colin Kaepernick (7) took off for a first down run in the second half Sunday January 19, 2014. The Seattle Seahawks defeated the San Francisco 49ers 23-17 to win the NFC championship and a trip to the Super Bowl at CenturyLink Field in Seattle, Washington. less

Colin Kaepernick (7) took off for a first down run in the second half Sunday January 19, 2014. The Seattle Seahawks defeated the San Francisco 49ers 23-17 to win the NFC championship and a trip to the Super ... more

Photo: Brant Ward, The Chronicle

Colin Kaepernick (7) took off for a first down run in the second... Photo-5798680.78776 - StamfordAdvocate

Image 19 of 60

San Francisco 49ers quarterback Colin Kaepernick (7) walks off the field after the 49ers defeated the Atlanta Falcons at Candlestick Park on Monday December 23, 2013 in San Francisco, Calif. It is the last home game the 49ers will have at Candlestick Park before the stadium is demolished. less

San Francisco 49ers quarterback Colin Kaepernick (7) walks off the field after the 49ers defeated the Atlanta Falcons at Candlestick Park on Monday December 23, 2013 in San Francisco, Calif. It is the last ... more

49ers qb Colin Kaepernick
The San Francisco 49ers play the Jacksonville Jaguars in game two, of the NFL International Series at Wembley Stadium in London on Sunday, October 27.
27/10/13,
photo: Sean Ryan /NFL

49ers qb Colin Kaepernick
The San Francisco 49ers play the Jacksonville Jaguars in game two, of the NFL International Series at Wembley Stadium in London on Sunday, October 27.
27/10/13,
photo: Sean Ryan /NFL

From his college days: Kaepernick of the Nevada Wolf Pack looks to pass against the UNLV Rebels in the third quarter of their game at Sam Boyd Stadium October 2, 2010 in Las Vegas, Nevada.

From his college days: Kaepernick of the Nevada Wolf Pack looks to pass against the UNLV Rebels in the third quarter of their game at Sam Boyd Stadium October 2, 2010 in Las Vegas, Nevada.

Photo: Ethan Miller, Getty Images

From his college days: Kaepernick of the Nevada Wolf Pack looks to... Photo-5798687.78776 - StamfordAdvocate

Image 27 of 60

Colin Kaepernick was congratulated by the Dolphins Cameron Wake at the end of the game. The San Francisco 49ers defeated the Miami Dolphins 27-13 at Candlestick Park in San Francisco, Calif. Sunday December 9, 2012. less

Colin Kaepernick was congratulated by the Dolphins Cameron Wake at the end of the game. The San Francisco 49ers defeated the Miami Dolphins 27-13 at Candlestick Park in San Francisco, Calif. Sunday December 9, ... more

San Francisco 49ers Quarterback Colin Kaepernick (7) celebrates with coach Jim Harbaugh after a touchdown in the third quarter of the San Francisco 49ers game against the Green Bay Packers in the NFC Divisional Playoffs at Candlestick Park in San Francisco, Calif., on Saturday January 12, 2013. less

San Francisco 49ers Quarterback Colin Kaepernick (7) celebrates with coach Jim Harbaugh after a touchdown in the third quarter of the San Francisco 49ers game against the Green Bay Packers in the NFC Divisional ... more

San Francisco 49ers quarterback Colin Kaepernick speaks at an NFL football media availability in Santa Clara, Calif., Wednesday, Jan. 16, 2013. The 49ers will face the Falcons in the NFC championship game on Sunday. less

San Francisco 49ers quarterback Colin Kaepernick speaks at an NFL football media availability in Santa Clara, Calif., Wednesday, Jan. 16, 2013. The 49ers will face the Falcons in the NFC championship game on ... more

Kap walks off the field after defeating the Green Bay Packers in the NFC Divisional Playoff Game at Candlestick Park.

Kap walks off the field after defeating the Green Bay Packers in the NFC Divisional Playoff Game at Candlestick Park.

Photo: Harry How, Getty Images

Kap walks off the field after defeating the Green Bay Packers in... Photo-5798701.78776 - StamfordAdvocate

Image 43 of 60

Kaepernick tries to leap away from St. Louis Rams outside linebacker Jo-Lonn Dunbar and defensive end William Hayes, right, during the first quarter of an NFL football game Sunday, Dec. 2, 2012, in St. Louis.

Kaepernick tries to leap away from St. Louis Rams outside linebacker Jo-Lonn Dunbar and defensive end William Hayes, right, during the first quarter of an NFL football game Sunday, Dec. 2, 2012, in St. Louis.

Kaepernick runs in for a touchdown in the third quarter of the San Francisco 49ers game against the Green Bay Packers in the NFC Divisional Playoffs at Candlestick.

Kaepernick runs in for a touchdown in the third quarter of the San Francisco 49ers game against the Green Bay Packers in the NFC Divisional Playoffs at Candlestick.

Photo: Brant Ward, The Chronicle

Kaepernick runs in for a touchdown in the third quarter of the San... Photo-5798707.78776 - StamfordAdvocate

Image 50 of 60

Taboola Gallery Frame Item-85307.78776 - StamfordAdvocate

Image 51 of 60

Quarterback Colin Kaepernick runs in a touchdown in the first quarter of the San Francisco 49ers game against the Green Bay Packers in the NFC Divisional Playoffs at Candlestick Park in San Francisco, Calif., on Saturday January 12, 2013. less

Quarterback Colin Kaepernick runs in a touchdown in the first quarter of the San Francisco 49ers game against the Green Bay Packers in the NFC Divisional Playoffs at Candlestick Park in San Francisco, Calif., ... more

Photo: Michael Macor, The Chronicle

Quarterback Colin Kaepernick runs in a touchdown in the first... Photo-5798708.78776 - StamfordAdvocate

Image 52 of 60

Kap celebrates at the end of his first postseason start: a resounding victory over the Packers.

Kap celebrates at the end of his first postseason start: a resounding victory over the Packers.

Photo: Brant Ward, The Chronicle

Kap celebrates at the end of his first postseason start: a... Photo-5798709.78776 - StamfordAdvocate

Image 53 of 60

Colin Kaepernick scrambles in the fourth quarter under pressure from Israel Idonije. The San Francisco 49ers played the Chicago Bears on November 19 and won 32-7.

Colin Kaepernick scrambles in the fourth quarter under pressure from Israel Idonije. The San Francisco 49ers played the Chicago Bears on November 19 and won 32-7.